diff --git a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecobosses/lifecycle/CompatibilityListeners.kt b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecobosses/lifecycle/CompatibilityListeners.kt
index b69e2d9..9bf997f 100644
--- a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecobosses/lifecycle/CompatibilityListeners.kt
+++ b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecobosses/lifecycle/CompatibilityListeners.kt
@@ -1,16 +1,27 @@
 package com.willfp.ecobosses.lifecycle
 
 import com.willfp.ecobosses.bosses.Bosses
+import org.bukkit.entity.Entity
 import org.bukkit.entity.LivingEntity
 import org.bukkit.event.EventHandler
 import org.bukkit.event.Listener
+import org.bukkit.event.entity.EntityTransformEvent
 import org.bukkit.event.entity.SlimeSplitEvent
 
 class CompatibilityListeners : Listener {
     @EventHandler
     fun handle(event: SlimeSplitEvent) {
-        if (Bosses[event.entity as? LivingEntity ?: return] != null) {
-            event.isCancelled = true
-        }
+        if (!this.isBoss(event.entity)) return
+        event.isCancelled = true
+    }
+
+    @EventHandler
+    fun handle(event: EntityTransformEvent) {
+        if (!this.isBoss(event.entity)) return
+        event.isCancelled = true
+    }
+
+    private fun isBoss(entity: Entity): Boolean {
+        return Bosses[entity as? LivingEntity ?: return false] != null
     }
 }